Moisture Transfer Model and Simulation for Dehumidification of HTGR Core

Table 4

Some parameters of model (250°C, 7 MPa).

Parameter	Value	Unit
Density of helium ρHe	6.524	kg/m^3
Molar mass of He	0.004	kg/mol
Molar mass of H2O	0.018	kg/mol
Kinetic viscosity of helium uHe	2.925×10^−5	kg/(m·s)
Kinetic viscosity of water vapor uH2O	1.822×10^−5	kg/(m·s)
Most probable aperture of BC	30.3	μm
Most probable aperture of IG-110	2.5	μm
Open porosity of BC εo	14.37	%
Open porosity of IG-110 εo	19.68	%
Gas diffusion coefficient DAB of binary gas (H2O + He)	1.226×10^−6	m^2/s
Effective diffusion coefficient De	De=DAB×	m^2/s
Permeability K of BC	0.49×10^−15	m^2
Permeability K of IG-110	1.97×10^−15	m^2